Manufacturing Process of GGG40 Nodular Cast Iron

Cast iron has become a popular cast metal material which is widely applied in modern industrial production, because of its low cost and desirable properties such as good castability, convenient machining property, better wear resistance, etc. Nowadays nodular cast irons are significant and preferred type of cast irons. Nodular cast irons that are similar to steels from the point of mechanical properties are most popular engineering materials; at the same time they are similar to cast irons in terms of chemical and physical properties. Most preferred nodular cast irons are respectively , GGG50, GGG60 and GGG70 in industry. GGG40 was chosen as casting material due to it is the most common of them according to foundry factory. In this study, manufacturing process of GGG40 nodular cast iron was realized and presented. Sand mould casting was only used as moulding process. Firstly, various sand tests were carried out to provide the sand mould casting standards. Convenient moulds were prepared for tensile test specimens. Subsequently, chemical content of cast materials were investigated. And finally manufacturing of specimens were completed by means of supplementary processes.